It's a theory in the colloquial sense of the word, and it is unsubstantiated in the only sense of the word. You are also working under the assumption that marijuana users experience "burn out" and trying to distinguish cause from correlation, but your underlying assumption has no evidence.
What I should have said is that the OP has made an observation, and your argument would be more convincing if you explained why that observation was incorrect, and what is the correct explanation of what he observed.
Comments
It's a theory in the colloquial sense of the word, and it is unsubstantiated in the only sense of the word. You are also working under the assumption that marijuana users experience "burn out" and trying to distinguish cause from correlation, but your underlying assumption has no evidence.
What I should have said is that the OP has made an observation, and your argument would be more convincing if you explained why that observation was incorrect, and what is the correct explanation of what he observed.